Role arrow

Interpretation

Role arrows join submodels that participate in some form of association, or where one is a satellite of the other. The following sections detail the mathematical methods invoked by the role arrow. In each case, a multi-dimensional matrix is created. The dimensions of the matrix depend on the number of role arrows used, and the different uses are therefore described in separate sections.

• one role arrow
• two role arrows - two submodels
• two role arrows - one submodel

How to add a role arrow

A role arrow can only be drawn between two submodels, one representing the object that plays a role in an association, and the other representing the association itself. Therefore, these two submodels must already exist in your model diagram.

1. click on the role arrow symbol on the toolbar;
2. move the mouse to inside the submodel that has a role in an association;
3. drag the mouse to inside the submodel that represents the association itself;
4. release the mouse button.

In : Contents >> Model diagram elements